radeonsi: fix tess levels coming as scalar arrays from SPIR-V

This fixes: KHR-GL45.gl_spirv.spirv_modules_positive_test

Fixes: 75ce078a0af "radeonsi: enable NIR by default and document GL 4.6 support"

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6460>
1 file changed